Processing 4.0 is not starting


I have a problem. I deleted the old processing (3.0 version )and installed the 4th version. When I start processing it appears an error: “Could not load Java Mode, please reinstall Processing”.
I tried to install a new version of JDK, but I get the same error. Did somebody had this issue until now ?

Thanks in advance!

EDIT: I resolved it. I deleted from Documents folder, the Processing folder, which contains examples, libraries etc.